$1,310+ Cheap flights from Seattle (SEA) to Asuncion (ASU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ASU
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Asuncion with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Asuncion
Cheapest
Best
Last-minute
Cheapest flights from Seattle to AsuncionExplore the most affordable flight options available from Seattle to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Seattle to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:08 am -
2 stops41h 47m
Sat 10/317:55 am -
2 stops42h 59m
Deal found 9/9![Multiple Airlines logo]()
$1,310
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:48 pm -
2 stops45h 15m
Sat 10/316:34 am -
3 stops37h 05m
Deal found 9/9![United Airlines logo]()
$1,400
This Orbitz deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am -
2 stops22h 30m
Sat 9/1211:30 am -
2 stops38h 25m
Deal found 9/7![Multiple Airlines logo]()
$1,891
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am -
2 stops18h 31m
Sat 9/126:33 am -
3 stops35h 46m
Deal found 9/7![United Airlines logo]()
$2,020
Best flights from Seattle to AsuncionDiscover carefully curated flight deals from Seattle to Asuncion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Seattle to Asuncion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:08 am -
2 stops41h 47m
Sat 10/317:55 am -
2 stops42h 59m
Deal found 9/9![Multiple Airlines logo]()
$1,310
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:48 pm -
2 stops45h 15m
Sat 10/316:34 am -
3 stops37h 05m
Deal found 9/9![United Airlines logo]()
$1,400
Last-minute flights from Seattle to AsuncionDiscover last-minute flight deals from Seattle to Asuncion. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Asuncion. Data last updated September 10, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am -
2 stops22h 30m
Sat 9/1211:30 am -
2 stops38h 25m
Deal found 9/7![Multiple Airlines logo]()
$1,891
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am -
2 stops18h 31m
Sat 9/126:33 am -
3 stops35h 46m
Deal found 9/7![United Airlines logo]()
$2,020
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:08 am -
2 stops41h 47m
Sat 10/317:55 am -
2 stops42h 59m
Deal found 9/9![Multiple Airlines logo]()
$1,310
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:48 pm -
2 stops45h 15m
Sat 10/316:34 am -
3 stops37h 05m
Deal found 9/9![United Airlines logo]()
$1,400
Find flight deals from Seattle to Asuncion
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Asuncion (ASU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,310 (Expedia) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Asuncion that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Seattle to Asuncion that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleAsuncion
SEA Seattle/Tacoma Intl - ASU Asuncion Silvio Pettirossi
SEAASU
Seattle/Tacoma Intl
Sat 10/24
8:08 am-5:55 am
2 stops41h 47m
Asuncion Silvio Pettirossi
Sat 10/31
7:55 am-10:54 pm
2 stops42h 59m
$1,310
Quickest round-trip
SeattleAsuncion
SEA Seattle/Tacoma Intl - ASU Asuncion Silvio Pettirossi
SEAASU
Seattle/Tacoma Intl
Sat 10/24
10:48 pm-12:03 am
2 stops45h 15m
Asuncion Silvio Pettirossi
Sat 10/31
6:34 am-3:39 pm
3 stops37h 05m
$1,400
Sorted by cheapest first
Compare providers for flights from Seattle to Asuncion
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Asuncion in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Asuncion flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Asuncion flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Asuncion flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Asuncion flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Asuncion flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Asuncion
Have a flexible travel schedule? Discover the best time to fly to Asuncion from Seattle with our price prediction graph.
SEA-ASU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Asuncion. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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